I play a Paladin, a Rogue and sometimes my bad Mage. I'm not gonna lie - I like them because they are good at this level, but also I got all these three in level 85 and I love to PvP with them at that lvl so I figured I prolly would at this lvl too.
I play on a completely dead server, I don't mind queueing alone. The only bad thing being on a non-populated twink-server is that it's hard to duel someone as practice.
I played the 19 bracket because I've played it since '07 (Warrior that is now perm-banned), created my Rogue in '08. The bracket is clearly not optimal in its current state, but I still like it in some way.